The greatest common factor (GCF) is often also called the greatest common divisor (GCD) or highest common factor (HCF). Keep in mind that these different terms all refer to the same thing: the largest integer which evenly divides two or more numbers.
The greatest common factor of 104 and 117 is 13
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There cannot be a greatest common factor (GCF) of just one number. To be common there need to be at least two numbers. If you find all the factors of two or more numbers, and you find some factors are the same ("common"), then the largest of those common factors is the Greatest Common Factor.
It is not possible to give a sensible answer to this question. A common factor refers to a factor that is COMMON to two or more numbers. You have only one number in the question!
1040 Power cheats
No, it doesn't end in a 5 or 0.
Prime factors are 2, 2, 2, 2, 5, 13 Others are combinations of the prime factors, i.e. 2 x 2 = 4 2 x 2 x 2 = 8 2 x 5 = 10 2 x 2 x 2 x 2 = 16 2 x 2 x 5 = 20 2 x 13 = 26 2 x 2 x 2 x 5 = 40 2 x 2 x 13 = 52 5 x 13 = 65 2 x 2 x 2 x 2 x 5 = 80 2 x 2 x 2 x 13 = 104 2 x 5 x 13 = 130 2 x 2 x 2 x 2 x 13 = 208 2 x 2 x 5 x 13 = 260 2 x 2 x 2 x 5 x 13 = 520
24 x 5 13 = 1040